Abstract
Summary
Rabbit spermatozoa pretreated with lysolecithin (LL) were mixed with SV40 transformed hamster somatic cells (F5-1 line) in the presence of LL and studied with the electron microscope. After LL pretreatment, small vesicles surround the spermatozoal head and appear to replace the plasma and outer acrosomal membranes. When mixed with F5-1 cells, pretreated spermatozoa are first encircled by somatic cell pseudopodia. Adhesion of the midregion of the spermatozoal head to membranes of the somatic cells, and incorporation of spermatozoa into somatic cells is potentiated in an undetermined manner.
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